उत्पत्ति के प्लेस
Guangdong, China
Product name
Highway emergency outdoor telephone
Version
Analogue , VoIP, GSM optional
Material
Cold-roll steel sheets
Warranty
18 Months and can be length
Application
Metro Highway Tunnel Coal Mine
Service temperature range
-30 degree to +75 degree
Lightening protection
ITU-T recommendation K.21